Topeak Baby Seat II with Disc Rack for 700c & 29 A wrap-around seat structure creates a virtual cocoon of protection and features an updated shoulder harness with a multiple height adjustment system. An innovative suspension system cushions bumps and jolts and the integrated roll bar provides extra head protection and doubles as a carrying handle. Adjustable footrests and straps keep small feet away from spinning wheels. Child seat complies with stringent European, CPSIA and Proposition 65 safety standards. The included heavy-duty disc mount rack features an innovative BabySeat™ attachment that requires no tools to attach and remove seat from rack. Once the seat is removed, the exposed QuickTrack® system is compatible with all Topeak MTX TrunkBags and MTX Rear Baskets. SEAT STRUCTURE: Molded engineering grade polymer SUSPENSION: Dual steel spring RACK: 6061 T-6 hollow aluminum MAX WEIGHT CAPACITY: BabySeat - 22 kg; Rack: 27 kg BAG COMPATIBILITY: MTX QuickTrack® system SIZE: Seat: 77.4 x 58.5 x 39.5 cm; Disc Rack: 42.5 x 34 x 23 cm WEIGHT: 3.13kg - Seat; 668g - Disc Rack